Antennas with non-foster matching networks
By: Aberle, James T.
Contributor(s): Loepsinger-Romak, Robert.
Material type:
BookSeries: Synthesis lectures on antennas: #2.Publisher: San Rafael, Calif (1537 Fourth Street, San Rafael, CA 94901 USA) : Morgan & Claypool Publishers, 2007Edition: 1st ed.Description: 1 electronic text (v, 47 p. : ill.) : digital file.ISBN: 1598291033 (electronic bk.); 9781598291032 (electronic bk.); 1598291025 (pbk.); 9781598291025 (pbk.).Uniform titles: Synthesis digital library of engineering and computer science. Subject(s): Antennas (Electronics) | Antenna radiation patterns | Impedance matching | Reactance (Electricity) | Active antenna | Electrically small antenna (ESA) | Non-foster matching networkDDC classification: 621.382/4 Online resources: Abstract with links to resource | Abstract with links to full text Also available in print.| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
|---|---|---|---|---|---|---|
E books
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PK Kelkar Library, IIT Kanpur | Available | EBKE083 |
Mode of access: World Wide Web.
System requirements: Adobe Acrobat Reader.
Part of: Synthesis digital library of engineering and computer science.
Series from website.
Includes bibliographical references (p. 47).
Antennas with non-foster matching networks -- Motivation for a new kind of radiating structure -- Electrically small antennas -- Foster's reactance theorem and non-foster circuit elements -- Basic concepts of matching and bode-fano limit -- Two-port model of AN antenna -- Performance of ESA with traditional passive matching network -- Performance of ESA with ideal non-foster matching network -- Basics of negative impedance converters (NICS) -- Simulated and measured NIC performance -- Simulated performance of ESA with a practical non-foster -- Matching network.
Abstract freely available; full-text restricted to subscribers or individual document purchasers.
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Most antenna engineers are likely to believe that antennas are one technology that is more or less impervious to the rapidly advancing semiconductor industry. However, as demonstrated in this lecture, there is a way to incorporate active components into an antenna and transform it into a new kind of radiating structure that can take advantage of the latest advances in analog circuit design. The approach for making this transformation is to make use of non-Foster circuit elements in the matching network of the antenna. By doing so, we are no longer constrained by the laws of physics that apply to passive antennas. However, we must now design and construct very touchy active circuits. This new antenna technology is now in its infancy. The contributions of this lecture are (1) to summarize the current state-of-the-art in this subject, and (2) to introduce some new theoretical and practical tools for helping us to continue the advancement of this technology.
Also available in print.
Title from PDF t.p. (viewed on Oct. 20, 2008).
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